Commit bb335afa authored by Peter Maydell's avatar Peter Maydell
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Merge remote-tracking branch 'remotes/rth/tags/pull-sfp-20191030' into staging 



Use hardfloat for float32_to_float64

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* remotes/rth/tags/pull-sfp-20191030:
  softfp: Added hardfloat conversion from float32 to float64

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parents 68d8ef4e 21381dcf

fpu/softfloat.c

+18 −1
Original line number Diff line number Diff line
@@ -1920,13 +1920,30 @@ float16 float32_to_float16(float32 a, bool ieee, float_status *s) 
    return float16a_round_pack_canonical(pr, s, fmt16);

}



float64 float32_to_float64(float32 a, float_status *s)

static float64 QEMU_SOFTFLOAT_ATTR

soft_float32_to_float64(float32 a, float_status *s)

{

    FloatParts p = float32_unpack_canonical(a, s);

    FloatParts pr = float_to_float(p, &float64_params, s);

    return float64_round_pack_canonical(pr, s);

}



float64 float32_to_float64(float32 a, float_status *s)

{

    if (likely(float32_is_normal(a))) {

        /* Widening conversion can never produce inexact results.  */

        union_float32 uf;

        union_float64 ud;

        uf.s = a;

        ud.h = uf.h;

        return ud.s;

    } else if (float32_is_zero(a)) {

        return float64_set_sign(float64_zero, float32_is_neg(a));

    } else {

        return soft_float32_to_float64(a, s);

    }

}



float16 float64_to_float16(float64 a, bool ieee, float_status *s)

{

    const FloatFmt *fmt16 = ieee ? &float16_params : &float16_params_ahp;